04.5 TST boost ?

[Coonrod]

I have just installed the Tst on my 04. 5 600. I have a straight exhaust, Afe intake and torque tube. My question is: What kind of boost should i be seeing? Stock it would peak at around 32. After the TST and The line that runs from the intake to the solenoid. It only peaks at around 30 or 31. The instuctions said to mount the boost bolt in the front intake bolt , but my gauge line comes out of it, So i mounted it in the bolt behind where the intake horn comes in directly below the #2 injector harness. Would that make any diffrence. There is nothing wrong with the way it runs.



Thanks

 

[DKiesewetter]

there is something wrong with the way it runs if you're only getting 30-31 lbs. of boost... I have the same mods on my 600 and I get 38 lbs of boost pretty easily. I drilled a hole in my intake ram to put in my boost gauge and used the bolt they told me to use for the hose to the wastegate. This box makes my truck a spotted ass ape... now I am waiting for my FASS and then a dual disk clutch.



Doug

 

[JPereira]

I also recently installed the TST. The most I have seen for boost is around 30 also. The truck goes great and I have been happy with it. I had thought about trying to adjust the set screw on the elbow provided to get the boost up. Has anyone messed with the set screw to increase boost? Does it need to go In to allow higher boost or Out?

 

[GWoody]

My truck was the same way only I was only getting about 30 and stock I had been able to hit around 36. There was another thread on this awhile back, and there was someone else on here who explained how to solve the problem. I had tried different hoses and elbows but his idea was the best. If you tighten the screw to limit the boost signal it is still not enough so what you have to do is take a scribe and slightly enlarge the hole on the side of the elbow that releases the boost signal and probably open the screw to let more air in. Don't over enlarge the hole or the wastegate will not open, just guessing but about 1. 5 times larger is what worked on mine then open the screw a little, this is a trial and error thing.

 

[Coonrod]

Thanks for the help. I will give that a try tomarrow.



What is the highest setting most of you are running? I have rolled the throttle on with in on 4/4 but the EGT's climbed just as fast as MPH.

 

[GWoody]

I've played on 5x5 a little but egt's to go high quick and you gotta be careful lettin off the throttle to quick there too or the turbo does bark a little, it seems the autos are a little more sensitive to the turbo bark thing.

 

[JPereira]

I am wondering if anyone knows if our stock intake can be limiting the ability to make boost? I noticed Dougs sig has a AFE intake and he states he can make 38lbs. I have a AFE on the way to me and we will see if it makes any more boost after installing AFE.



Jeff

 

[DKiesewetter]

Who knows if my AFE is what is helping me build more boost, but I do know I drive around most days at 6/4... don't usually go below it, and have been running at 8/4. I like the smoke... and my clutch seems to hold it OK. I can't really get my EGT's above 1400 so I figure I am OK. We didn't buy this TST box so as not to use it. Besides a little turbo bark is good for the soul.



Doug

 

[SP Diesel]

GWoody,



Curious if you have had a chance to remove your silencer ring yet, and if it helped any of your barking issues?

 

[GWoody]

GWoody,



Curious if you have had a chance to remove your silencer ring yet, and if it helped any of your barking issues?

Yeah, I took it out but couldn't really tell that it helped any with the turbo bark issues and it actually felt like the truck was a little slower on the launch so I put it back in. It works fine at wide open throttle till you hit about 70 then when you let off the throttle a little to let it shift into overdrive the converter seems to slip going into OD so the engine revs a little more and the boost comes up more so the response is to let off a little more so the transmission can complete it's shift and that's when she huffs backwards, usually 2 or 3 times. There's been a couple of times it really felt violent, I'd rather not send turbo vanes through the intercooler. I been thinkin about a good transmission upgrade, I think that would solve a lot of the barking issues. I had talked to this one company that was coming out with a good strong box that controled the boost with the electronics already on the truck, I don't know what ever happened to that project.

 

[GWoody]

"I can't really get my EGT's above 1400 so I figure I am OK"



Doug, how long you had the TST, I'm wondering if it's one of the newer programs, on 3x3 I can hit 1400 pretty easy, say, 0 to 75.

 

[DKiesewetter]

It is one of the newer programs... I am curious as to how it will put power down since it is obviously not as violent as the earlier boxes. I am going to dyno it this Friday, so I should know better by then. 0-75 and I hit 1250 or so... on 4-4... If I bump it up to 8-4 I will go over 1450 on a WOT run... but I usually back out at that point. The power is pretty smooth, and it doesn't hit anywhere near as hard as I expected it to... if the numbers are not where they should be then I may have to send it back to have Mark reprogram it.





Doug

 

[GWoody]

I figured it was one of the newer programs with the EGT being so slow to rise. Let us know how that dyno run turns out. I'll bet the numbers are there just at a little higher setting than the old programs. On 5/5 mine put down 418 RWHP & 837 RWTQ at about 40 lbs. of boost.

 

[RDusch]

I just installed my TST pmcr on my 04. 5 tonight with the new waste gate tube and i'm only getting 30psi also.



How much boost is safe to run with the stock turbo?



Rick

 

[GWoody]

"How much boost is safe to run with the stock turbo"





I'm not sure about the turbo but most opinions for stock head gasket is not to exceed 50 lbs. , I know there are some who are above that and haven't had problems yet. If the boost isn't built too fast or released too fast I think the turbo can probably stand more than the head gaskets. I tow about 12000 pretty regular on settings 2/1 or 2/2 and on most hills on an interstate that is just gradual slopes the truck runs 75 with the cruise set pushing about 35 lbs of boost and the egt running 1200 so I'm happy with those boost numbers.

 

[Coonrod]

I can know hit 40 psi of boost. I enlarged the hole in the boost elbow and played with the set screw. It took a few times to get it right. The first time was actually less. Right know I have the hole a little bigger and the set screw all the way in.



My EGT's are better now also. When it is set on 3/3 from a dead stop, I am going over 90mph before the temps hit 1400. I have also got the AFE intake and torque tube with silencer ring removed.



I have not sliped the converter or heard the turbo bark yet, although I have not let off fast either.



I too would say the next bomb would be to the transmission.

 

[JPereira]

I am seeing the same 30lbs of boost. Could you explain how you enlarged the elbow? I have the same setup and would like to get my boost near 40lbs also. Any help is appreciated. I am running my truck on 3/3 and like it.

Thanks

 

[GWoody]

"Could you explain how you enlarged the elbow?"



Take a scribe or some type of tapered objest and, (woller), is that a word, the bleed hole on the side of the elbow out a little to bleed off some of the boost signal, don't get to large or the wastegate will not get enough pressure to open. If you do get a little too big you can open the screw a little to let more air volume pass.

 

[JPereira]

Thanks... I will definately try that over the weekend...

 

[DKiesewetter]

So... .



I dyno'ed today... The place I dyno'ed was kind of a ripoff... they couldn't get their engine sensor to work, and that means I have no torque numbers and some shady HP numbers. They Dyno'ed my truck in 4th gear (Dyno guy tried to tell me the NV5600 had 2 OD's... right), and my buddy who dyno'ed with me was quite a bit lower than his last run despite having fixed a few minor holdbacks.



TST box set at 0/0 resulted in a 216 HP run, 6/5 gave me 347. 17 HP, 8/4 was a 361 HP run, 8/5 was a 368 HP run, 9/4 was a 373 HP run.



Now, my buddy dyno'ed in 3rd gear on his auto and then dyno'ed in OD... he gained 27 HP just by dyno'ing in OD... I am sure the difference between my 4th gear and 5th 1:1 is about the same... so I think I am more like 400 HP... I am not very happy about not getting any torque numbers.



I am putting my FASS on tomorrow... hopefully a new clutch soon thereafter... I'll keep y'all posted.